I don’t bother with any. I hate the thought of chemicals like that.
Otherwise welcome and yes at first it is a bit of a juggle at first, measure this count that … but very simple in the end.
Breakfast - bacon and eggs cooked in butter (lard, tallow or similar).
Do not use “vegetable oil” it is just nasty industrial machine oil.
Lunch - avocado, canned salmon and feta
Dinner - steak and steam vegetables, then on my plate I add butter on the veggies which improves the taste and it’s a secret supply of fat.
Drink tons of water. Do not forget salt.
Don’t drink too much coffee or else I can’t sleep. But I enjoy at least one cup with the morning, instead of milk I use pure “pouring cream”.
Don’t have too much butter (fat) or it’ll be too much energy.
If too tired. Make sure salt is up. And make sure I’ve eat enough fat! (Increasing protein makes you drowsy, butter or olive oil is pure energy).
Diet is very easy.
For tracking - I use have Fitbit Versa and hence the iPhone app to enter all food. I can see the grams of everything on their website when I log in.
Watch hidden carbs. They like to smuggle sugar (fructose) or wheat into everything.
For snacks I have almonds, walnuts, seeds … trail mix but low carb ones. I’ve had half a piece of dark chocolate (90% cocoa) once or twice …
Anyway good luck.
Cheers.